[interpreter] Teach register optimizer about SuspendGenerator.

test/mjsunit/es6/generators-objects.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 95 matching lines @@
     let proto = {};
     g.prototype = proto;
     assertSame(proto, Object.getPrototypeOf(g()));
   }
 
   // Custom non-object as .prototype
   g.prototype = null;
   assertSame(generator_prototype, Object.getPrototypeOf(g()));
 }
 TestPrototype();
+
+
+function TestComputedPropertyNames() {
+  function* f1() { return {[yield]: 42} }
+  var g1 = f1();
+  g1.next();
+  assertEquals(42, g1.next('a').value.a);
+
+  function* f2() { return {['a']: yield} }
+  var g2 = f2();
+  g2.next();
+  assertEquals(42, g2.next(42).value.a);
+}
+TestComputedPropertyNames();